Improvement in plows



UNITED STATES LIBERTY B. DENNETT, OF PORTLAND, MAINE.

IIVI PROV EMENT IN PLOWS.

Specification forming part of Letters Patent No. 55,069, dated May 29,1866.

To all whom it may concern Be it known that I, LIBERTY B. DENNETT, ofPortland, in the county of Cumberland and State of Maine, have inventeda new and use-' ful Improvement in Plows; and I do hereby declare thatthe following is a full and exact description of the construction andmode of using the same, reference being had to the accompanyingdrawings, and to the letters and figures marked thereon.

My improvement in plows is designed to facilitate the discharge ofweeds, grass, and stubble that in plows of the common constructionaccumulate at the upper part of the plow, near to the beam, andfrequently require an attendant to clear away the hardened mass with ahoe or other implement.

The power required to draw a plow constructed as herein described isvery much less than in those that allow an accumulation of obstructions,and with the application of an equal power I obtain an increasedvelocity and a cleaner cut. The construction is such that the sward orturf rises upon the cutter and mold-board, and the upper part of thesod, in

, being secured to the left handle, at which point the cross-barR isaffixed, its opposite end being inserted in the handle P. 7 Near thebottom of the handles there is a similar cross bar, R.

The beam is curved upward near the middle, and is of such form that thedraft applied at the clevis Q will insure the proper position to theoperating parts of the plow as it moves through the ground.

The moldboard B may be of any required curvature or form, according tothe kind of work to be done, and the landside S is vertical and in oneplane.

At the upper part of the landside there is a curved open space, B, itsfront boundary being under the point M, while the rear line passesupward to the beam D, forming the front edge of the standard 0, which isseveral inches in breadth and of such thickness as to insure greatstrength.

The rear line of the standard C curves downward and backward, forming apart of the rear of the laudside S, at which point it is bolted to thelower end of the left handle or arm 1?. The standard joins the beam D atthe point marked X, and its position is in the rear of the placecommonly occupied by the standard, this latter point being representedby the dotted lines M M. It will also be observed that the standard ismuch longer than that of the common plow.

At the upper and rear part of the mold-board there is affixed a wing orprojection, E, which is bolted at the opposite end to the side of thestandard 0, and gives a firm support to the rear frame-work of the plow.

The cutter A is bolted to the front of the plow at the points G M, andis wide enough to cut the turf or ground as fast as it rises on themold-board.

The grass and stubble, as it accumulates near the top of the cutter A,is carried upward by the rising sod or earth and falls over the top ofthe mold-board into the cavity between the standard O, the wing F, thelandsidc S, and the mold-board B, as represented in Fig. II.

The upward curvature of the beam D prevents the pressure of any stubbleor compacted mass of earth and grass upon it and allows space for itsescape into the opening or cavity above referred to.

What I claim, and desireto secure by Letters Patent, is

The standard 0, supported by the wing or .brace F, extending from thestandard to the rear of the mold-board, the standard 0 being so placedas to offer no resistance to the stubble or grass as it falls over themold-board into the central cavity of the plow.

LIBERTY B. DENNETT. In presence of FRANKLIN HUNT, EBEN T. GRAY.

